Teen Titans #17

The cover of this October 1968 DC issue says it all: a grinning, orange-haired Mad Mod — rendered in wild op-art psychedelia against a London skyline — clutches Robin, Kid Flash, Wonder Girl, and Speedy in one enormous fist, the team utterly helpless against his outsized grip. Nick Cardy's cover art captures the groovy, pop-culture energy of the era perfectly, blending mod fashion with superhero action in a way that feels unmistakably late-'60s. If you're a fan of the Teen Titans facing a decidedly British brand of villainy, this one's a treat.